SOLUTION: How many ounces of 20% and 35% acid solution should be mixed to produce 15 oz of 30% acid solution?

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Question 1055004: How many ounces of 20% and 35% acid solution should be mixed to produce 15 oz of 30% acid solution?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
.35x + .25(15-x) = .30*15
35x + 25(15-x) = 30*15
x = 5*15/10 = 7.5, ounces of 35% and 7.5, ounces of highlight%2825%29% 15-7.5
Thanks for the heads Up on the typo